by unitedhealthcare insurance company. like all standardized medicare supplement plans, it helps cover some of what medicare doesn't pay. to find out more, call today. >>> we want to get you back now to john zarrella, who is on the streets of los angeles watching very closely the shuttle endeavor making its way to the california science center. what a sight there, john. >> reporter: yeah, randi, it has been spectacular. they were ahead of schedule this morning, so the thousands of people who came here, they had an extra treat getting to see the shuttle just sitting there before it moves on to its next location, which is a mall area, where there's going to be some performances as well. and i have a terrific opportunity and a pleasure to introduce to you three of the space shuttle astronauts who flew on endeavor over the years. kay haier here to my left, greg johnson in the middle, and mike fink in my right. kay, you flew twice, right? greg was the pilot on the last endeavor flight. and mike flew the last endeavor flight, his only shuttle flight, but he did fly a couple times and was commande
